The act of doing or saying some thing so insanely stupid in front of a group of people that you usually cant even deny what you said. Originated when a high school student did and said the stupidest things anyone has ever seen or heard of.

Kid 1: Yea the food at that bakery was really good.
Matt: Yea one time I went to a bakery and they actually sold baked goods.
Kid 2: Wow, Matt Moment.